The Delos label’s first-ever full-length Italian opera recording, this star-studded current release of Giuseppi Verdi’s Simon Boccanegra promises quite the splash among today’s opera fans. As Verdi was entering his glorious “late period” (Otello and Falstaff) he wrote and re-worked much of Simon Boccanegra, a work he first tackled in 1857. The opera emerged in 1881 as a …